Moments ago I won the Ross Tech VAG-COM cable on Ebay. Here's the deal on this magic cable that lets you change your software settings: New they're $350, but used they're around $300-320 on Ebay. You use it, change your settings, and then sell it back for that $200-220. It's a kind of rental program. They key is selling it back and not holding onto it thinking you'll somehow need it again.
Finally, VW of Oakland won't take my old stereo back, claiming I voided the warranty by removing it, so the next step will be to call Volkswagen of America. Wish me luck.
Average Fuel Economy: 26.8